Effect of pre-conditioning on the carbonation curing characteristics of belite-rich cement paste
This study investigated the effect of pre-conditioning on the carbonation curing characteristics of belite-rich cement (BRC) paste. Before carbonation curing, the BRC paste was pre-conditioned under ambient dry and oven dry conditions, and its physicochemical and mechanical properties were subsequen...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-10-01
|
| Series: | Developments in the Built Environment |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666165925001255 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | This study investigated the effect of pre-conditioning on the carbonation curing characteristics of belite-rich cement (BRC) paste. Before carbonation curing, the BRC paste was pre-conditioned under ambient dry and oven dry conditions, and its physicochemical and mechanical properties were subsequently evaluated. The highest compressive strength was observed when the moisture content before carbonation curing was approximately 50 %. The results suggest that CO2 penetration alters the hydration mechanism of BRC paste and that pre-conditioning enhances both carbonation curing efficiency and overall physicochemical properties. Compared to untreated samples, pre-conditioned specimens exhibited higher compressive strength, primarily due to the removal of internal moisture, which increased the reactive surface area for CO2, facilitated its rapid diffusion, and promoted more uniform carbonation. Furthermore, XRD, TG/DTG, and MIP analyses revealed that pre-conditioned BRC paste contained higher amounts of ettringite and calcite after 28 days of curing, further improving its physicochemical performance. |
|---|---|
| ISSN: | 2666-1659 |